Zhao Yucheng, the co-designer of the Wuhan Yangtze River Bridge, signs autograph for a visitor during the celebration of the 50th anniversary of the opening traffic of the bridge in Wuhan, capital of central China's Hubei Province Oct. 14, 2007. The bridge, completed on Oct. 15, 1957, is the first railway-highway bridge over the Yangtze River. (Xinhua) |